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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+gTestfile = '11.7.2.js';
+
+/**
+   File Name:          11.7.2.js
+   ECMA Section:       11.7.2  The signed right shift operator ( >> )
+   Description:
+   Performs a sign-filling bitwise right shift operation on the left argument
+   by the amount specified by the right argument.
+
+   The production ShiftExpression : ShiftExpression >> AdditiveExpression is
+   evaluated as follows:
+
+   1.  Evaluate ShiftExpression.
+   2.  Call GetValue(Result(1)).
+   3.  Evaluate AdditiveExpression.
+   4.  Call GetValue(Result(3)).
+   5.  Call ToInt32(Result(2)).
+   6.  Call ToUint32(Result(4)).
+   7.  Mask out all but the least significant 5 bits of Result(6), that is,
+   compute Result(6) & 0x1F.
+   8.  Perform sign-extending right shift of Result(5) by Result(7) bits. The
+   most significant bit is propagated. The result is a signed 32 bit
+   integer.
+   9.  Return Result(8).
+
+   Author:             christine@netscape.com
+   Date:               12 november 1997
+*/
+var SECTION = "11.7.2";
+var VERSION = "ECMA_1";
+startTest();
+
+writeHeaderToLog( SECTION + "  The signed right shift operator ( >> )");
+
+var power = 0;
+var addexp = 0;
+
+for ( power = 0; power <= 32; power++ ) {
+  shiftexp = Math.pow( 2, power );
+
+  for ( addexp = 0; addexp <= 32; addexp++ ) {
+    new TestCase( SECTION,
+		  shiftexp + " >> " + addexp,
+		  SignedRightShift( shiftexp, addexp ),
+		  shiftexp >> addexp );
+  }
+}
+
+for ( power = 0; power <= 32; power++ ) {
+  shiftexp = -Math.pow( 2, power );
+
+  for ( addexp = 0; addexp <= 32; addexp++ ) {
+    new TestCase( SECTION,
+		  shiftexp + " >> " + addexp,
+		  SignedRightShift( shiftexp, addexp ),
+		  shiftexp >> addexp );
+  }
+}
+
+test();
+
+function ToInteger( n ) {
+  n = Number( n );
+  var sign = ( n < 0 ) ? -1 : 1;
+
+  if ( n != n ) {
+    return 0;
+  }
+  if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY ) {
+    return n;
+  }
+  return ( sign * Math.floor(Math.abs(n)) );
+}
+function ToInt32( n ) {
+  n = Number( n );
+  var sign = ( n < 0 ) ? -1 : 1;
+
+  if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
+    return 0;
+  }
+
+  n = (sign * Math.floor( Math.abs(n) )) % Math.pow(2,32);
+  n = ( n >= Math.pow(2,31) ) ? n - Math.pow(2,32) : n;
+
+  return ( n );
+}
+function ToUint32( n ) {
+  n = Number( n );
+  var sign = ( n < 0 ) ? -1 : 1;
+
+  if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
+    return 0;
+  }
+  n = sign * Math.floor( Math.abs(n) )
+
+    n = n % Math.pow(2,32);
+
+  if ( n < 0 ){
+    n += Math.pow(2,32);
+  }
+
+  return ( n );
+}
+function ToUint16( n ) {
+  var sign = ( n < 0 ) ? -1 : 1;
+
+  if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
+    return 0;
+  }
+
+  n = ( sign * Math.floor( Math.abs(n) ) ) % Math.pow(2,16);
+
+  if (n <0) {
+    n += Math.pow(2,16);
+  }
+
+  return ( n );
+}
+function Mask( b, n ) {
+  b = ToUint32BitString( b );
+  b = b.substring( b.length - n );
+  b = ToUint32Decimal( b );
+  return ( b );
+}
+function ToUint32BitString( n ) {
+  var b = "";
+  for ( p = 31; p >=0; p-- ) {
+    if ( n >= Math.pow(2,p) ) {
+      b += "1";
+      n -= Math.pow(2,p);
+    } else {
+      b += "0";
+    }
+  }
+  return b;
+}
+function ToInt32BitString( n ) {
+  var b = "";
+  var sign = ( n < 0 ) ? -1 : 1;
+
+  b += ( sign == 1 ) ? "0" : "1";
+
+  for ( p = 30; p >=0; p-- ) {
+    if ( (sign == 1 ) ? sign * n >= Math.pow(2,p) : sign * n > Math.pow(2,p) ) {
+      b += ( sign == 1 ) ? "1" : "0";
+      n -= sign * Math.pow( 2, p );
+    } else {
+      b += ( sign == 1 ) ? "0" : "1";
+    }
+  }
+
+  return b;
+}
+function ToInt32Decimal( bin ) {
+  var r = 0;
+  var sign;
+
+  if ( Number(bin.charAt(0)) == 0 ) {
+    sign = 1;
+    r = 0;
+  } else {
+    sign = -1;
+    r = -(Math.pow(2,31));
+  }
+
+  for ( var j = 0; j < 31; j++ ) {
+    r += Math.pow( 2, j ) * Number(bin.charAt(31-j));
+  }
+
+  return r;
+}
+function ToUint32Decimal( bin ) {
+  var r = 0;
+
+  for ( l = bin.length; l < 32; l++ ) {
+    bin = "0" + bin;
+  }
+
+  for ( j = 0; j < 31; j++ ) {
+    r += Math.pow( 2, j ) * Number(bin.charAt(31-j));
+  }
+
+  return r;
+}
+function SignedRightShift( s, a ) {
+  s = ToInt32( s );
+  a = ToUint32( a );
+  a = Mask( a, 5 );
+  return ( SignedRShift( s, a ) );
+}
+function SignedRShift( s, a ) {
+  s = ToInt32BitString( s );
+
+  var firstbit = s.substring(0,1);
+
+  s = s.substring( 1, s.length );
+
+  for ( var z = 0; z < a; z++ ) {
+    s = firstbit + s;
+  }
+
+  s = s.substring( 0, s.length - a);
+
+  s = firstbit +s;
+
+
+  return ToInt32(ToInt32Decimal(s));
+}